Walt2,
Many people nowdays go for cellular backup to the alarms phone line connection. This usually is an added monthly expense in one way or another.
Dave_x10_L,
While, I would hate to be your phone guy, this is exactly the sort of thing that a "real" security company should be telling you. Make it difficult to approach where you don't want people approaching. Make it difficult to hide (especially near the house). And by all means, examine your
physical security, good locks, strong doors, good outside lighting. Windows are a bit difficult, since there may be a time when
you need to get
out them.
Basically, while an alarm system is great for your safety if you're home and may deter some from entering or scare them away if they do, it is mostly best at "documenting the crime" for your insurance company.
Personally, I prefer the "keep them outside in the first place" approach.